drivers/staging/vboxvideo/vbox_drv.c

   1 /*
   2  * Copyright (C) 2013-2017 Oracle Corporation
   3  * This file is based on ast_drv.c
   4  * Copyright 2012 Red Hat Inc.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  18  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  19  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * The above copyright notice and this permission notice (including the
  23  * next paragraph) shall be included in all copies or substantial portions
  24  * of the Software.
  25  *
  26  * Authors: Dave Airlie <airlied@redhat.com>
  27  *          Michael Thayer <michael.thayer@oracle.com,
  28  *          Hans de Goede <hdegoede@redhat.com>
  29  */
  30 #include <linux/module.h>
  31 #include <linux/console.h>
  32 #include <linux/vt_kern.h>
  33
  34 #include <drm/drmP.h>
  35 #include <drm/drm_crtc_helper.h>
  36
  37 #include "vbox_drv.h"
  38
  39 int vbox_modeset = -1;
  40
  41 MODULE_PARM_DESC(modeset, "Disable/Enable modesetting");
  42 module_param_named(modeset, vbox_modeset, int, 0400);
  43
  44 static struct drm_driver driver;
  45
  46 static const struct pci_device_id pciidlist[] = {
  47         { 0x80ee, 0xbeef, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
  48         { 0, 0, 0},
  49 };
  50 MODULE_DEVICE_TABLE(pci, pciidlist);
  51
  52 static int vbox_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
  53 {
  54         return drm_get_pci_dev(pdev, ent, &driver);
  55 }
  56
  57 static void vbox_pci_remove(struct pci_dev *pdev)
  58 {
  59         struct drm_device *dev = pci_get_drvdata(pdev);
  60
  61         drm_put_dev(dev);
  62 }
  63
  64 static int vbox_drm_freeze(struct drm_device *dev)
  65 {
  66         struct vbox_private *vbox = dev->dev_private;
  67
  68         drm_kms_helper_poll_disable(dev);
  69
  70         pci_save_state(dev->pdev);
  71
  72         drm_fb_helper_set_suspend_unlocked(&vbox->fbdev->helper, true);
  73
  74         return 0;
  75 }
  76
  77 static int vbox_drm_thaw(struct drm_device *dev)
  78 {
  79         struct vbox_private *vbox = dev->dev_private;
  80
  81         drm_mode_config_reset(dev);
  82         drm_helper_resume_force_mode(dev);
  83         drm_fb_helper_set_suspend_unlocked(&vbox->fbdev->helper, false);
  84
  85         return 0;
  86 }
  87
  88 static int vbox_drm_resume(struct drm_device *dev)
  89 {
  90         int ret;
  91
  92         if (pci_enable_device(dev->pdev))
  93                 return -EIO;
  94
  95         ret = vbox_drm_thaw(dev);
  96         if (ret)
  97                 return ret;
  98
  99         drm_kms_helper_poll_enable(dev);
 100
 101         return 0;
 102 }
 103
 104 static int vbox_pm_suspend(struct device *dev)
 105 {
 106         struct pci_dev *pdev = to_pci_dev(dev);
 107         struct drm_device *ddev = pci_get_drvdata(pdev);
 108         int error;
 109
 110         error = vbox_drm_freeze(ddev);
 111         if (error)
 112                 return error;
 113
 114         pci_disable_device(pdev);
 115         pci_set_power_state(pdev, PCI_D3hot);
 116
 117         return 0;
 118 }
 119
 120 static int vbox_pm_resume(struct device *dev)
 121 {
 122         struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
 123
 124         return vbox_drm_resume(ddev);
 125 }
 126
 127 static int vbox_pm_freeze(struct device *dev)
 128 {
 129         struct pci_dev *pdev = to_pci_dev(dev);
 130         struct drm_device *ddev = pci_get_drvdata(pdev);
 131
 132         if (!ddev || !ddev->dev_private)
 133                 return -ENODEV;
 134
 135         return vbox_drm_freeze(ddev);
 136 }
 137
 138 static int vbox_pm_thaw(struct device *dev)
 139 {
 140         struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
 141
 142         return vbox_drm_thaw(ddev);
 143 }
 144
 145 static int vbox_pm_poweroff(struct device *dev)
 146 {
 147         struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
 148
 149         return vbox_drm_freeze(ddev);
 150 }
 151
 152 static const struct dev_pm_ops vbox_pm_ops = {
 153         .suspend = vbox_pm_suspend,
 154         .resume = vbox_pm_resume,
 155         .freeze = vbox_pm_freeze,
 156         .thaw = vbox_pm_thaw,
 157         .poweroff = vbox_pm_poweroff,
 158         .restore = vbox_pm_resume,
 159 };
 160
 161 static struct pci_driver vbox_pci_driver = {
 162         .name = DRIVER_NAME,
 163         .id_table = pciidlist,
 164         .probe = vbox_pci_probe,
 165         .remove = vbox_pci_remove,
 166         .driver.pm = &vbox_pm_ops,
 167 };
 168
 169 static const struct file_operations vbox_fops = {
 170         .owner = THIS_MODULE,
 171         .open = drm_open,
 172         .release = drm_release,
 173         .unlocked_ioctl = drm_ioctl,
 174         .mmap = vbox_mmap,
 175         .poll = drm_poll,
 176 #ifdef CONFIG_COMPAT
 177         .compat_ioctl = drm_compat_ioctl,
 178 #endif
 179         .read = drm_read,
 180 };
 181
 182 static int vbox_master_set(struct drm_device *dev,
 183                            struct drm_file *file_priv, bool from_open)
 184 {
 185         struct vbox_private *vbox = dev->dev_private;
 186
 187         /*
 188          * We do not yet know whether the new owner can handle hotplug, so we
 189          * do not advertise dynamic modes on the first query and send a
 190          * tentative hotplug notification after that to see if they query again.
 191          */
 192         vbox->initial_mode_queried = false;
 193
 194         mutex_lock(&vbox->hw_mutex);
 195         /*
 196          * Disable VBVA when someone releases master in case the next person
 197          * tries tries to do VESA.
 198          */
 199         /** @todo work out if anyone is likely to and whether it will work. */
 200         /*
 201          * Update: we also disable it because if the new master does not do
 202          * dirty rectangle reporting (e.g. old versions of Plymouth) then at
 203          * least the first screen will still be updated. We enable it as soon
 204          * as we receive a dirty rectangle report.
 205          */
 206         vbox_disable_accel(vbox);
 207         mutex_unlock(&vbox->hw_mutex);
 208
 209         return 0;
 210 }
 211
 212 static void vbox_master_drop(struct drm_device *dev, struct drm_file *file_priv)
 213 {
 214         struct vbox_private *vbox = dev->dev_private;
 215
 216         /* See vbox_master_set() */
 217         vbox->initial_mode_queried = false;
 218
 219         mutex_lock(&vbox->hw_mutex);
 220         vbox_disable_accel(vbox);
 221         mutex_unlock(&vbox->hw_mutex);
 222 }
 223
 224 static struct drm_driver driver = {
 225         .driver_features =
 226             DRIVER_MODESET | DRIVER_GEM | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED |
 227             DRIVER_PRIME,
 228         .dev_priv_size = 0,
 229
 230         .load = vbox_driver_load,
 231         .unload = vbox_driver_unload,
 232         .lastclose = vbox_driver_lastclose,
 233         .master_set = vbox_master_set,
 234         .master_drop = vbox_master_drop,
 235         .set_busid = drm_pci_set_busid,
 236
 237         .fops = &vbox_fops,
 238         .irq_handler = vbox_irq_handler,
 239         .name = DRIVER_NAME,
 240         .desc = DRIVER_DESC,
 241         .date = DRIVER_DATE,
 242         .major = DRIVER_MAJOR,
 243         .minor = DRIVER_MINOR,
 244         .patchlevel = DRIVER_PATCHLEVEL,
 245
 246         .gem_free_object = vbox_gem_free_object,
 247         .dumb_create = vbox_dumb_create,
 248         .dumb_map_offset = vbox_dumb_mmap_offset,
 249         .dumb_destroy = drm_gem_dumb_destroy,
 250         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
 251         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
 252         .gem_prime_export = drm_gem_prime_export,
 253         .gem_prime_import = drm_gem_prime_import,
 254         .gem_prime_pin = vbox_gem_prime_pin,
 255         .gem_prime_unpin = vbox_gem_prime_unpin,
 256         .gem_prime_get_sg_table = vbox_gem_prime_get_sg_table,
 257         .gem_prime_import_sg_table = vbox_gem_prime_import_sg_table,
 258         .gem_prime_vmap = vbox_gem_prime_vmap,
 259         .gem_prime_vunmap = vbox_gem_prime_vunmap,
 260         .gem_prime_mmap = vbox_gem_prime_mmap,
 261 };
 262
 263 static int __init vbox_init(void)
 264 {
 265 #ifdef CONFIG_VGA_CONSOLE
 266         if (vgacon_text_force() && vbox_modeset == -1)
 267                 return -EINVAL;
 268 #endif
 269
 270         if (vbox_modeset == 0)
 271                 return -EINVAL;
 272
 273         return drm_pci_init(&driver, &vbox_pci_driver);
 274 }
 275
 276 static void __exit vbox_exit(void)
 277 {
 278         drm_pci_exit(&driver, &vbox_pci_driver);
 279 }
 280
 281 module_init(vbox_init);
 282 module_exit(vbox_exit);
 283
 284 MODULE_AUTHOR("Oracle Corporation");
 285 MODULE_DESCRIPTION(DRIVER_DESC);
 286 MODULE_LICENSE("GPL and additional rights");